Chapter 3. IBM System Storage DS4000 and DS5000 hardware 29
3.4 DS5100 and DS5300 storage subsystems
The first models of the DS5000 family that have been released offer increased performance
compared to the family’s DS4000 predecessors. With the ability to hold up to 448 TB of SATA
disk physical capacity or more than 268 TB of FC disk physical capacity, the DS5000 can be
customized for both performance-oriented and capacity-oriented storage solutions.
Figure 3-5 shows a DS5300 storage subsystem with attached EXP5000 expansion modules.
Figure 3-5 DS5300 storage subsystem
The following two models are available:
DS5100 (1818-51A)
DS5300 (1818-53A)
The two models differ in the number of host ports and amount of cache for data and
performance.
Model DS5100 initially comes with eight host channels, 4 Gbps FC, and 8 GB cache for data.
Model DS5300 comes with eight or sixteen host channels, 4 Gbps FC, and 8 or 16 GB cache
for data and full performance activation.
Models DS5100 (1818-51A) and DS5300 (1818-53A) have these features:
Compact 4U rack-mountable enclosure.
Utilizes new seventh generation dedicated ZIP ASIC engines on RAID controllers.
Features Intel® Xeon 2.8 GHz processor.
Dual, redundant controllers.
PCI Express x8 bus technology.
Dedicated cache for data (base model has 8 GB cache) with enhanced diagnostics. The
architecture is designed to support a 32 GB cache per controller.
Dedicated processor memory of 2 GB per controller.
Hot-swappable lithium-ion battery for backup and destaging data from cache.
New flash memory to store dirty data from cache during power outage.
Two dedicated PCI Express buses for cache mirroring.
Redundant, hot-swappable power supplies and fans.
Hot-swappable interconnect module acts as midplane.
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